Improvement in lamps



A. ASYVER SUN.`

Lamps.

Patented May Y26, 1874.

ANDREW sYvnnsoN, or orucneo, runners.

IMPROVEMENT lN LAMPS.

Specification forming part of Letters Patent No. 1151,250, dated May 26, 1874 application filed December 20, 1873.

To all whom it may concern:

Be it known that I, ANDREW SYvnnsoN, of Chicago, in the county of' Cook and State of' Illinois, have invented certain new and usef'ul Improvements in Lamps, of which improvements the following is a full, clear, and exact description, which will enable others sliilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawing, forming a part hereof, and in Which- Figure lis a vertical central section of a lamp provided With my improvements; Fig. 2, an elevation ofthe chimney, and Fig. 3 a top or plan view of the spreader and of the perforated cap which supports it.

Like letters of reference `indicate like parts.

i In the drawing, A represents the base ofthe lamp. B is a tubular extension supporting the upper parts of the lamp. The base is holloW and is perforated, as shown at a a. rIhe part I3 communicates with the perforated chamber in the base, and is made cup-shaped at its upper end to receive the oil-cup. (l is the oil-cup. C is a shield or cap attached to the cup C, and surrounding the upper part of the latter. An air-sp -ec exist-s between the oil-cup and the cap C', as shown. The cap C is fitted to the part which receives the oil-cup, and is readily removable from the said part. An air-space also exists across the bottom of the oil-cup, and surrounds its vertical Walls, as shown. a a are perforations in the cap C. D and Dl are shields projecting from the cap C', and e c are perf'orations in the shield D. It will be observed that the shield I) extends above the perforations c c, and that an annular space surrounds the shield D. E is a removable cap iitted 'Y to a collar or flange, in which the upper part of the cap C termina-tes, and e e are perforations in the cap E. F is the Wick-holder attached to and projecting above the cap F. The Wick-holder also sits into the mouth of the oil-cup, as shown. G is a perforated disk resting on the cap E, and extending nearly tothe top of' the wick-tube, and terminating at that point in the spreader 0r diffuser Gr. The parts Gr and G are in contact, or nearly so, with the ends of the Wick-tube; but a considerable space exists between the sides of the tube and the said parts, as shown in Figs.` l and 3. H is a removable cap sitting over the cap E, and c is a central slot therein to receive the iame. H is a ange extending from the cap H to the shield D. h h are perf'orations in the cap H, and h h' are perforations in the flange H. I is the chimney. In the construction of parts shown in Figs. l and 3, and already described, the chimney may be supported on the flange Hf, and retained in its position by means of' the shield D', which projects above the said flange for that purpose; but any suitable means may be employed for the purpose of holding the chimney in its place.

ltwvill be observed from the foregoing descriptionthat the standard is hollow and perforated at its base, and communicates with chambers leading to the flame. 'Ihe direction of the current of' air which Afeeds the flame is represented by the arrows shown on the drawing, and it will be'perccived that this current finds an exit through the slot in the cap H, and is thus made to impinge the sides of' the iiame. In other Words, the blast which strikes the flame proceeds from below the cap H. A current of comparatively cold air also passes through the spreader G, and strikes the sides of the iiame.

It will also be observed that the shield D protects the perforations a and e from lateral currents, and that the shield D and the chimney protect the perfbrations h and li and the perf'orations in the disk G from like currents. Then the lamp is moved vertically, a sudden or uneven current through the top of' the chimney may be prevented by means of a perforated capattached thereto, and commonly employed for that purpose.

It will also be perceived that the air is fed to the llames through a perforated surface much larger than the base of' the chimney, and that a current of' cool air is constantly iiowing about the air-cup.

this means a strong blast is produced, which results in a bright light anda steady flame, and but comparatively little smoke is created, even when the lamp is moved about. Explosive oils and fluids are also less liable to explode, the cup being surrounded by cool air.

Having` thus described in v invention, what f oil-cup, the oil-cup provided with the per- I claim as new, and desire to secure by Letters Patent, is-

l. A lainp constructed snbstantiaiy as deseribed, and provided with'the shields D and D, for the purpose of protecting the perforations in the top of the lainp from lateral Currents, an open spaoe existing between the said shields, and the inner shield being` perforated, substantially as speeied.

2. The combination of the hollow and perforated standard, constructed to receive the forated shield or eap Cf, and with the shield D and perforated shield D', the perforated eap E, the perforated eap Gr, provided with the spreader G', and the slotted and perforated eap H, provided with the flange H', all substantially as and for the purpose specified.

ANDREV SYVERSON.

Witnesses:

A. MosNEss, F. F. WARNER. 

